Fluid-pressure motor



(No Model.)

E. M. BUTZ.

FLUID PRESSURE MoToR.

No. 267,489. Pate-.um Nov; 14, 1882.

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Unirse STATES PATENT Ormea, 4

EDWARD M. BUTZ, OF ALLEGHENY CITY, ASSIGNOR TO THE PENNSYLVANIA CONSTRUCTION COMPANY, OF

PITTSBURG, PENNSYLVANIA.

FLUID-PRESSURE MOTOR.

SPECIFICATION forming part of Letters Patent No. 267,489, dated November 14, 1882. Application led February 8, 1882. (No model.)

To all whom it may concern Be it known lthat I, EDWARD M. BUTZ, of Allegheny City, county of Allegheny, State of lennsylvania, have invented or discovered a new and useful Improvement in Fluid-Pressure Motors; and I do hereby declare the following to be a full, clear, concise, andv exact description thereof, reference being had to the accompanying drawings, making a part of this 1o specitication, in which-like letters indicating like parts'- Figure 1 is a view in side elevation ot' my improved duid-pressure motor, a part of vthe same being shown in vertical section 5 and Fig.

2 is a top plan view, a part being shown in horizontal section.

My present invention relates to duid-pressure power apparatus, and more particularly that class employed for hoisting; and it conzo sists, in general terms, in certain combinations ot' duid-pressure cylinders and pistons, with sheaves or pulley-blocks and rope, so arranged that duid-pressure within the cylinders will move the pistons and sheaves .simultane- .z5 ously in opposite directions, as hereinafter more fully described and claimed.

Thepnrpose of my invention is to provide an apparatus capable of doing a comparatively large amount ot' work by means of twov 3o small cylinders and pistons instead ot' one large one, the two being arranged and'combined so as to secure cheapness in construction and special adaptation to the requirements of this class ot' machinery.

In the drawings, A A represent two duidpressure cylinders adapted for hydraulic, steam, air, gas, or other pressure medium, as may be preferred. These cylinders are mounted by any suit-able supports, B, in line, and with 4o heads or receiving ends t a adjacent. A trunk supply and discharge pipe, E, leads by branches c c to each cylinder through ports c in their adjacent ends. A valve, F, may be employed to admituid under pressure to both cylinders simultaneously, and a similar valve, F, in the dischargepipe E', which leads from trunk-pipe E, may be employed to el'ect simultaneous discharge from both cylinders. By alternate opening and closing of these valves 5o by the usual or any suitable valve-governing acting and respond to duid-pressure on one side only. Stems C are extended outward .from these pistons, and are connected, as at c, 6o

with sheaves D D', consisting ot' frames cl and any desired number of loose pulleys d', which are adapted to receive a rope, H, olle end ot' which is fastened to any suitable fixed sup port-astotheframeatlL-andthenceis passed over the sheaves, from one set to the other, any desired number of times, as represented in Fig. 1, fromwhich it is carried to any object which it mayfbe desired to move-as, t'or exaniple, an elevator-car. 7o i I have shown the apparatus mounted horizontally, and i'n such case I prefer to support and guide the sheaves ou tracks I through tlanged or grooved wheels t', placed at the sides of the frames d, as illustrated in Fig. 2. It' the cylinders are arranged in vertical position, as may be done, any suitable guides may be substituted for these tracks.

In operation, iiuid under pressure being admitted to both cylinders, as described, the 8o sheaves D D will be spread a distance equal to double the stroke of each piston, and as both pistons move simultaneously this amount of spread will be securedin halt' the time required for one piston to make its stroke; also, the power exerted by the two cylindersisdouble that ot' one of the same area, an adequate supply ot" fluid under pressure being provided to operate both pistons as described. These advantages in power or in speed are very material ones, 9o and in my improved apparatus one or the other, as may be desired, can be secured in a much better and more economical way than heretofore, since the cylinders may be comparatively small, with short piston-stroke, which cost much less than large ones fora long stroke, and in arranging them I provide for increase in speed and motion without complication of pulleys.

Substantially Lthe same principles of conroo struction may be embodied in an apparatus having a greater number of cylinders, pistons, and sheaves, operating,` radially outward from a common center, with guide-pulleys for directing` the rope to and from the movable sheaves; but in so far as such application ol these principles involves patentable invention in addition to that herein covered, the same Will beincluded in the subject-inatter ot' a separale application for patent.

Itvvill be understood that by rope H7 linean any suitable flexible rope, cord, chain, cable, or similar article-such, i'or example, as are in eonnnon use for dralt and hoisting` purposes.

I claim herein as my invention-- l. Ina Huid-pressure motor, the combination of t\vo fluid-pressure cylinders, arranged in line with iiuid snpplP and discharge for their adjacent ends, two pistons-one in each c vlinder, l and adapted to move in opposite directions un- ED\VARD M. BUT

Vitnesses:

1;. H. XYHrr'rLnsnY, U. L. PARKER. 

